PHP regular matching and array traversal

This article mainly introduces PHP regular matching and array traversal. Interested friends can refer to it. I hope it will be helpful to everyone.

The example in this article describes the PHP ID card number checking class, as follows:

<?php
 class CIDMaker // 声明一个身份证号码检查类
 {
 var $id;
 var $err;
 var $idx = array(1,1,1,1,1,1,1,1,3,1,1,2,2,2,3,2,2,2,2,2,2,2,3,3,3,3);
 var $idy = array(0,1,2,3,4,5,6,7,4,8,9,0,1,2,5,3,4,5,6,7,8,9,0,1,2,3);
 function check($id_no)
 {
  $id_no = ucfirst($id_no); // 将英文字母转大写
  if(ereg("^[A-Z][0-9]{9}$", $id_no))
  {
  for($i=0;$i<10;$i++)
  $ch[$i] = substr($id_no,$i,1);
  $i = 0;
  // 将英文字母转为数字 BEGIN
  for ($char = "A"; $char != $ch[0]; $char++)
   $i++;
  // 将英文字母转为数字 END
  // 导入检查公式 BEGIN
  $id = $this->idx[$i]+$this->idy[$i]*9+$ch[1]*8+$ch[2]*7+$ch[3]*6+$ch[4]*5+$ch[5]*4+$ch[6]*3+$ch[7]*2+$ch[8]*1+$ch[9]*1;
  $id = (($id % 10) == 0) ? TRUE : FALSE;
  return $id;
  // 导入检查公式 END
  }
  else
  return 0;
 }
 }
?>

In addition, regarding ID number verification, this site also provides ID card ownership query The tools are as follows:

http://tools.jb51.net/bianmin/sfz

Summary: The above is the entire content of this article, I hope it can It will be helpful to everyone’s study.

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